Gas-washer.



N. LATTA.

GAS WASHER.

APPLICATION TILED MAY 16, 1910. 1,002,810, Patented Sept. 5,-1911.

m 2 SHEETS-SHEET 1.

8 7 4 E ItTZ INLET WlTNEsaEs- |'NVEN'T EH={- g W ATTmF-qmsv UNITED sir/Ar as PATENT OFFICE.

NISBET LATTA, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS-GHALMERS COM- PANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY.

GAS-WASHE R.

Specification of Letters Patent.

Patented Sept. 5, 1911.

Application filed May 16, 1910. Serial No. 561,656.

To all whom it may concern:

Be it known that I, Nisnn'r LA'r'rA, a citimen of the United States, resiiiling at Milwi'iukee, in the county oi Milwaukee and hate ot' \Visconsin, have invented a certain new and useful Improvement in Gas- "Washers, of which the folhm'ing is a speciiication.

'llhis invention relates to improvements in the construction of washers, and in particular to that type of gas washers in which the gas under treatment is thoroughly mixed with the cleansing medium, after which the mixture is subjected to the action of con-- trifugal force, the cleansed gas being withdrawn by a force acting on the mixture in opposition to the action of the centrifugal force.

An object of the invention is to provide a gas washer which is sin'iple in its construclion and in which a. maximum portion of the impurities contained in the gas are removed automatically by centrifugal force. In gas washers of the type in which the gas under treatn'ient is mixed with the cleanz-aing agent and the mixture subjected to the action of centrifugal force prior to the separation of the cleansed gas therefrom, it is essential,- 7 to have a. thorough ininii'g of the gas cleansing n'iediuin; second, to have the .t arc sul'iiected to a combined centrifi'lgal 'l' integrating auction; and third, to the withdrawn tron"! the mixture or it. subject-ion to the ee'a'iti'ixlugal and. d if sting actions, by a force acting in rn'ipositioi. to the centrifugal EOICG' and sailicient to completely lfifilf'H-W. the suspended gas 'ivarticles but iusuflicieut to overhalance the force acting on the impurities and cleansing mediumof the mixture.

Another object-of the invention is to rovide a. washer in which all of these desirable features are embodied and in which the gas is removed. fromfthe mixture by the act-ion of suction in opposition to the centrifugal fori'ae acting on the mixture. By this opposition of forces an intensified stratifica tion is obtained, that is to say, the opposition such that the light gases can be withdrawn by the suction action, while the relatively heavy impurities and cleansing medium are held. in suspension until after removal of the gases, when the heavy particles are thrown in a film upon the casing of the washer. After separation, the impurities thus thrown upon the casing are removed looking in the direction of the arrows. Fig.

3 is a transverse vertical section through the gas washer, the section being taken on the line TIL-1H of Fig. 2, looking in the direction of the arrows. Fig. -.l is a transverse, vertical section through the gas washer, the section being taken on the line IV--IV of Fig. 2, looking in the direction of the arrows.

The driving shaft 1 of the gas washer is supported in end bearings 3 and has an overhanging end connected to any suitable driving means, not shown. The main casing 19 is formed around and concentric with the shaft- 1, between. the supporting bearings 3, the casi 19 being sup mrted. from below by legs or "iraces .119. The inlet casing 5,

see Figs. 1 and 2, is. also formed concentric of the main casing 19, the chai'nhers "uhiin. the casings being nnectod by an aperture in the wall of the air: casing 19. The closed end oi the casing which is nearest the bearing 3, provided with a stuffing box 8 which enacts with theshaft l and prevents leakage from within the casing 5 to the atmosphere. An inlet 4 leads to the interior of the casing from a source of gas supply, not shown, the source being any suitable one, as nroducer, a' storage reser-- with the shaft 1. and is fastened to one end voi1-, natural. gas or similar supply. The

fan 2 at the opposite end of the casing 19 has a discharge opening 26, and a suction opening registering with an opening 28 in the main casing 19, being t.hus.a lapted to withdraw fluid from within the casing 19. This fan 2 may be of any desirable type, the runner of the fan 2 being mounted on the shaft 1 and operable thereby.

The shaft 1 has a. concentric conduit 9 vformed therein, the conduit 9 extending through that portion of the shaft 1 Within the main casing 19, inlet casing 5, and the adjacent bearing 3. The wash-water. inlet pipe 6, haying the controlling valve '7 there in, connects with the conduit 9 at the end of the shaft 1; Ports 10, 21, which may be provided with spray nozzles or similar device, extend through the walls of the shaft 1, within. the casing 19, thus forming connections between the conduit 9 and the interior of the casing 19.

The cylindrical drum or shell 11, having numerous perforations 12 formed through its walls, is mounted on the shaft 1 concentric therewith and within the casing 19.

- This shell 11 extends throughout the length of the casing 19, there being a minimum al- 'lowable amount of clearance space between the endsofthe shell 11 and the end walls of the casing 19. The shell llis supported on the shaft 1 by spiders 15, 17, and a brittle wall 13 which between the spiders 15, 17. The spider 15 at the inlet end of the valve has comparatively large inletopenings 14 passing therethrough, and is fastened to the shaft 1 and shell 1] in any suitable manner, as by shrinking or brazing the members together. The bafiie wall 13 is imperforate, eing fastened to the shaft 1 and shell 11 in any suitable manner, as by circular angles or by brazing. The spider 17 at the discharge end of the washer has discharge openings 16 formed therethrough and is fastened to the shaft 1 and shell 1]. in any suitable manner, as by shrinking or brazing the members together. The ports 10 enter the interior of the casing 19 at points between the spider 14 and the wall 13, while the orts 21 enter theinteriorof the casing 19 etween the wall 13 and the spider 17. There may be any desired number of these ports 10, 21, instead of two of each as shown, depending upon the ,amount of cleansing water which it is desired to inject into the washer. The openings of the ports 10, 21, may also be'made adjustable, thereby giving-an adjustable control for the amount of cleansing medium admitted.

' Beaters 18 ,project outwardly from the shell 11 and are substantially radial to theshaft -1, being formed in one with or securely fastened to the periphery shell 11. The

heaters 18 project to within a short distance from the interior surface of the casing 19,

and are penetrated by a plurality of relatively small perforations .20. It may'also be noted. that the clearancebetween. the heaters 18- and the casing 19 'is slightly greater near the central portion than near the ends of the heaters 1 8,.but" such a construction is not essential,

. The pipe 22, having-the controlling valve 23 therein, enters the top of the casing 19- at a'series of points, the openings being directed toward the lower portion of the easthe casing 19 and to disintegrate tion action of the fan ing 19. A series of discharge pipes 25 lead from the lower portion of the casing 19 and are directed into a liquid contained in the basin 24. The basin 21 is below the main casing 19 and has an omrllow 29 at one side thereof, see Figs. 3, 4.

During the operation of the device, the shaft 1 is given a relatively rapid, rotary motion carrying with it the runner of the fan 2 andthe shell 11. The valve 7 is .opened, permitting wash-water to enter the conduit 9, from which condi'lit it is passed through the ports 10, 21, to the interior of the cylindrical shell 11. The rapid 1'o-ta tion of the shaft 1, causes the wash-water leaving the ports 10, 21, to be dashed or sprayed Within the shell 11 and finally to impinge against the inner wall of the shell 11. The gas to be cleansed is admitted to the chamber 5 through the inlct'l and passes from the chamber 5 to the interior of the shell 11 through the openings 14. Upon reaching the interior of the shell. 11, the gas is caught up by and thoroughly mixed with the waslrwater entering through the ports 10, and is carried in suspension with the wash-water to the inner wall of the shell 11. From the inner wall of the shell 11, the mixture of gas and wash-water is eventually forced through the openings 12 into-the circular, path of the rapidly moving heaters 18. The heaters 18 continue to mix the gas and wash-water, tending to throw the mixture of water and.

the mixture by separating the heavier particles therefrom.- The suction produced within the shell 11 on the fan side of the partition 13, prevents the-mixture from being lodged at mice against the casing 19, and tends to draw'the suspended mass toward the fan 2. The centrifugal force exerted by the rapidly rotating shell 11 and beaters 18, however,-is of sufiicient magnitude to event ually throw the particles of the mass other than gas, toward the casing 1 9, but this is not-done until the gas particles have been withdrawn, from the mixture by the suc- 2, thereby permit-ting the solid and semi-solid particles of the mixture to become more compact and heavier per unit volume. The gas is withdrawn from the path of the heaters 18 through the perforations 12 in the shellll 0n the fan side of the partition 13. Upon reaching the interior of the'shell 11, the gas thus with drawn through the perforations 12, is drawn through the second spray of wash-Water emerging from the ports 21. This second spray of wash-water produces an additional cleansing action and serves to completely remove any impurities which may have been only partially removed from the gas during the first washing thereof.-

The clean gas is then withdrawn by means of the. fan 2 gas toward from within the shell 11. through the dis eharg'e, openings ll). 3%, and is l'inally tlis eharged t'rom the tan 2 through the dis charge it? thereof. .\s the heavy partit-les t'roni whieh. the gas has been removed are thrown in a continual tilm against the interior ot the easing it). they are washed toward the diseharge pipes 25 by water or other liquid admitted into the top o't the easing it) through the pipe l'rom the pipes 25 the .raslmrater and snspei'ided gas impurities are disehare'ed into the basin 2-1, from \l'll'lt'll they ran he easily remm'ed.

l3 eonstrnetingg' the heaters 18 parallel to the shaft 1. as shown, the gases under treatment have their horizontal travel toward the disehargg e end of the washer retarded ll) the rei-aaitell heating: at-tiun to which they are snhjerted. this aetion tendii'igg; to earry them around the shalt l in a eireumterential path and sustaining: the mixture in .sns pension for a longer period of time. thus intensil' \'in e the relative oppesition of the tort-es. at a slieht ane'le to the axis of the shaft 1, so as to produee a slight eonreyine action tending to convey the mixture toward the inlet end of the washer and thus still more intensity the oppositien of the tones.

'It should he understood that it is not de sired to he limited to the exael' details of eonstrnetion shown and deserila'd, tor oh- \'ious moditiialtioi'is will oeenr to a person skilled in the art.

It is elaiined and desired to seeure by Letters latent,-

I. In a gas nasher. a easing, a perforated shell within said easing, a heater projecting The heaters .18 might also he plaeed from said shell, means for rotating said shell eireular path, a gas inletv to said shell, a gas outlet from said shell, means for spraying liquid p'ithin said shell near said inlet, and means For producing a suetionat said one let, whereby gas admitted through said inletis forced through said shell to said heater path and from said path through said shell to said outlet.

2. In a gas 'asher, a :asing, a perforated shell within said :asing, a transverse wall within said shell dividing same into twu eoinpartments, means for admitting a liquid to the interior of said shell on either side of said wall, and means for causing a flow of gas through said shell from one compartment and through said shell to the other compartment.

3. la a gas washer, a easing, rotatable shell'within said easing, a. wall within said shell, a heater projecting from said shell, a gas inlet to said shell on one side of said wall, a gas outlet from said shell on another side of said wall, means for admitting a liquid to said shell near said inlet, whereby gas admitted through said inlet is t'oreed through said shell into the path or said heater. and means tor withdrawing said gas from said' path on the outlet side oi said wall.

In testimony whereof, I allix my signature in the presence of two nitnesses.

Wit nesses:

II. (I. (.asic, W. ll. Linnea.

a perforated, 

